Title:
METHOD OF CLEANING FILTER SAND
Document Type and Number:
Japanese Patent JP3807542
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To regenerate function to clean filter sand without shutting down the operation of a filter basin even when the installation of a storage tank in which the filter sand removed of dirt is kept stored is not possible.
SOLUTION: A prescribed amount of the filter sand 5 is sucked away by pump 2 from the rapid filter basin 1 for cleaning water by the filter sand during back flow cleaning of the rapid filter basin 1. The sucked filter sand 5 is supplied to a sand cleaner 3 and the dirt to the filter sand is removed by the sand cleaner 3. The filter 7 get rid of the dirt is returned to the rapid filter basin 1 before the back flow cleaning of the rapid filter basin 1 ends.
Inventors:
Yasuhiro Saito
Application Number:
JP2001138429A
Publication Date:
August 09, 2006
Filing Date:
May 09, 2001
Export Citation:
Assignee:
Japan Raw Materials Co., Ltd.
International Classes:
B01D24/02; B01D24/46; B01D24/00; B01D29/62; B01D41/02; B03B5/00; (IPC1-7): B01D24/02; B01D24/46; B01D29/62
Domestic Patent References:
| JP5678684A | ||||
| JP62186911A | ||||
| JP10109051A | ||||
| JP5420694B2 | ||||
| JP3693532B2 |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma